Apparatus for attaching an aircleaner to a carburetor



Sept. 1, 1964 c. c. PHILLIPS 3,147,101

' APPARATUS FOR ATTACHING AN AIRCLEANER TO A CARBURETOR Filed Sept. 18, 1961 IO 48 50 I0 52 58 24 38 g *Hw 76 2O 8 7+ +7 INVENTOR.

CARLTON c. PHILLIPS 28 ATTORNEYS in obstructing relation thereto.

United States Patent 3,147,101 APPARATUS FGR ATTACHING AN AIRCLEANER TO A CARBURETOR Carlton C. Phillips, Birmingham, Mich., assignor to Holley Carburetor Company, Warren, Mich., a corporation of Michigan Filed Sept. 18, 1961, Ser. No. 138,812 Claims. (Cl. 55-507) The invention relates to aircleaners and refers more specifically to apparatus for securing an aircleaner to a carburetor which apparatus is so constructed and is so installed in the carburetor as not to obstruct the air induction passage of the carburetor.

In the past aircleaners have been provided with a mounting ring adapted to be sleeved over an aircleaner mounting lip provided on a carburetor air horn and have been held in assembly with the carburetor by means of a bolt extending through the aircleaner centrally thereof and secured to an aircleaner hold-down bracket positioned over the air induction passage of the carburetor This means of securing an aircleaner to a carburetor materially effects the op- .eration of the engine with which the carburetor is associated in that a measurable engine power loss is efiected by the interference of the aircleaner hold-down bracket with the free passage of air into the carburetor air induction passage.

It is therefore one of the objects of the present invention to provide apparatus for securing an aircleaner to a carburetor which does not obstruct the air induction passage of the carburetor.

Another object is to provide apparatus for securing an aircleaner to a carburetor which does not obstruct the air induction passage of the carburetor including a U-shaped aircleaner hold-down bail having radially outwardly extending ends adapted to be positioned within oppositely located radially extending through openings in the carburetor air horn and an aircleaner mounting stud secured to the aircleaner hold-down bail centrally thereof.

Another object is to provide apparatus as set forth above wherein internal axially extending grooves are provided at opposite circumferential points on the inner surface of the carburetor air horn to receive vertically extending portions of the ends of the aircleaner hold-down bail and a U-shaped bracket is provided at each side of the carburetor air horn passing around an end of the bail and having end portions extending into axial recesses in the carburetor air horn outer surface for securing the ends of the bail in the grooves and openings.

Another object is to provide apparatus as set forth above wherein the ends of the U-shaped bracket terminate in portions extending circumferentially of the air horn in opposite directions in recesses provided therefor.

Another object is to provide apparatus as set forth above wherein axial passages are provided in the car buretor air horn communicating with said radially extending through openings to permit placing of clips on annular grooves in the ends of the aircleaner hold-down bail to lock the ends of the bail in the openings.

Another object is to provide apparatus for securing an aircleaner to a carburetor which does not obstruct the air induction passage of the carburetor including a U-shaped aircleaner hold-down bail having vertically extending end portions adapted to be received in vertically extending circumferentially opposite grooves in the exterior surface of the carburetor air horn and ends extending inwardly of the bail at acute angles to the general plane thereof and in opposite directions adapted to be received in similarly oriented passages extending through the air horn walls at similar acute angles to a diameter of the air horn.

Other objects and features of the invention will become apparent as the description proceeds, especially when taken in conjunction with the accompanying drawings, illustrating a preferred embodiment of the invention, wherein:

FIGURE 1 is a partial section of an aircleaner secured to a carburetor with aircleaner mounting apparatus constructed in accordance with the invention.

FIGURE 2 is a partial section of'an aircleaner secured to a carburetor by a modification of the aircleaner mounting apparatus illustrated in FIGURE 1.

FIGURE 3 is a cross section of the carburetor, aircleaner and aircleaner mounting apparatus illustrated in FIGURE 2 taken on the line 33 in FIGURE 2.

FIGURE 4 is a perspective view of another modification of the aircleaner mounting apparatus of FIGURE 1 shown in assembly with a carburetor.

FIGURE 5 is a perspective view of a modification of the aircleaner mounting apparatus of FIGURE 4 shown in assembly with a carburetor.

FIGURE 6 is a partial section of an aircleaner secured to a carburetor by still another modification of the aircleaner mounting appartus shown in FIGURE 1.

FIGURE 7 is an enlarged partial cross section of the aircleaner, carburetor and aircleaner mounting apparatus illustrated in FIGURE 6.

With particular reference to the figures of the drawing an embodiment of the invention will now be disclosed.

As shown in FIGURE 1 the aircleaner 10 is secured to the carburetor 12 by the aircleaner mounting apparatus 14. The aircleaner mounting apparatus 14 includes the aircleaner hold-down bail 16 secured to the carburetor 12 and the aircleaner mounting stud 18 supported on the bail 16. The bail 16 is so formed and is secured to the carburetor 12 in such a way that the air induction passage 20 of the carburetor is not obstructed thereby.

The carburetor 12 includes the air horn 22 having the aircleaner mounting lip portion 24 and the venturi portion 26. An annular flange 28 is provided on the air horn 22 to support the gasket 30 and the flange 32 of the aircleaner mounting ring 34. The through openings 38 are also provided extending radially of the lip portion 24 of the air born 22 which openings are adapted to receive the radially outwardly extending ends 40 of the bail 16. Bail 16, as shown in FIGURE 1, is a U-shaped resilient member which may be formed of spring wire. The ends 40 of the bail 16 as previously indicated extend radially outwardly with respect to the air induction passage 20 and are adapted to extend into openings 38 in the air induction passage. Aircleaner mounting stud 18 is provided with a head 42 having an opening 44 therethrough by which the stud 18 is mounted on the bail 16 on passing of the bail through opening 44. Stud 18 passes through the opening 46 in the upper housing portion 48 of the aircleaner 10 and is threadedly engaged with the nut 50 in assembly. The aircleaner 10 comprises upper and lower exterior housing members 48 and 52 respectively. The lower exterior housing member 52 is provided with the aircleaner mounting ring 34 adapted to sleeve over the aircleaner mounting lip portion 24 of the carburetor air born 22 in assembly, as shown best in FIGURE 1. The aircleaner 10 further includes the annular filter element 54 including the filter material 56 enclosed between the upper and lower annular plates 59 and 61, the annular screen 63 and a similar annular screen (not shown) at the outer periphery of the filter element 54.

In assembly the stud 18 is mounted on the bail 16 by threading the bail through the passage 44 before the bail is bent to the shape shown. The ends 40 of the bail 16 are then inserted in the openings 38 in the carburetor 12 by means of springing the ends 40 of the bail 16 radially inwardly and inserting them into the air induction passage 20. Sealing gasket 30 is positioned on flange 28 and the aircleaner is sleeved over the lip 24 of the air horn 22 so that the stud 18 passes through the opening 46. The washer 51 is then inserted over the stud 18 and the nut 50 is tightened to secure the aircleaner 10 in position on the carburetor 12.

Thus it will be seen that in accordance with the invention there is provided aircleaner mounting apparatus 14 which is not only simple in construction and economical to manufacture but efficient in use and extremely easy to install and remove. Further it will be noted that with the construction provided that the aircleaner mounting apparatus does not obstruct the free passage of air into the air induction passage 20 of the carburetor.

Four modifications of the aircleaner mounting apparatus 14 are illustrated in FIGURES 2 and 3, FIGURE 4, FIGURE 5, and FIGURES 6 and 7. In considering the modified aircleaner mounting apparatus similar structural elements are designated by the same reference numerals.

The modified aircleaner mounting apparatus 14 illustrated in FIGURES 2 and 3 differs from the aircleaner mounting apparatus 14 of FIGURE 1 in that the bail extends along the radially outer surface of the aircleaner mounting lip portion 24 of the air horn 22 in the vertical grooves 58 provided therefor. The ends of the bail extend inwardly of the carburetor air horn 22 in passages 38 provided therefor.

It will be particularly noted that the ends 40 of the bail 16 and the passages 38 of the modified aircleaner mounting apparatus 14 of FIGURES 2 and 3 are inclined oppositely at substantially the same acute angle to a diameter through the air horn 22, as best shown in FIG- URE 3. With such structure the ends 40 of the bail 16 may be longer whereby the bail 16 more firmly grips the air horn 22. Additionally tightening of the nut on the stud 18 tends to secure the ends 40 of the bail 16 within the passages 38 rather than shear the ends 40 as would be the case if the ends 40 of the bail 16 extended radially of the air horn.

A further advantage of the modification of the aircleaner mounting apparatus 14 illustrated in FIGURES 2 and 3 is that the mounting ring 34 of the aircleaner 10 locks the ends 40 of the bail 16 in the recesses 38 with the structure assembled as shown best in FIGURE 2.

The modified aircleaner mounting apparatus 14 illustrated in FIGURE 4 includes the axially extending abutments within the air induction passage 20 of the air horn 22 providing axially extending interior recesses 62 for receiving the portions of the bail 16 extending within the air horn 22. Such axially extending recesses prevents angular displacement of the bail 16 Within the carburetor air horn 22. Additionally the U-shaped brackets 64 are provided to retain the bail 16 within the recesses 62. As shown in FIGURE 4 the ends 66 of the brackets 64 are positioned in axially extending recesses 68 in the radially outer surface of the aircleaner mounting lip portion 24 of the air horn 22 while the central portion of the brackets 64 pass around the bail 16. In assembly it Will be understood that the ends 66 of the brackets 64 are secured within the recesses 68 by the mounting ring 34 of the aircleaner 10.

The modified aircleaner mounting apparatus 14 illustrated in FIGURE 5 is entirely similar to that illustrated in FIGURE 4 with the exception that the ends 66 of the brackets 64 terminate in portions 70 extending in circumferential recesses 72 in the radially outer surface of air horn 22. Thus with the modification of the aircleaner mounting apparatus 14 illustrated in FIGURE 5 the brackets 64 are restrained from displacement axially of the air induction passage as well as from radial and angular movement relative to the air induction passage.

The modification of the aircleaner mounting apparatus 14 illustrated in FIGURES 6 and 7 differs from that illustrated in FIGURE 1 in that axially extending grooves 74 are provided on the radially inner surface of the air horn 22 for receiving the portion of the bail 16 Within the air induction passage. As previously indicated such positioning of the portions of the bail within the air induction passage 20 further prevents angular displacement thereof. In addition axially extending recesses 76 are provided in the air horn 22, as shown best in FIG- URE 6, which are in communication with the passages 38. The ends 40 of the bail 16 are provided with an annular groove 78 therearound for receiving the retaining clip 80 assembled on the end 40 of the bail 16 by insertion thereof through the recess 76. This modification of the aircleaner mounting apparatus 14 has the advantage that the ends 40 of the bail 16 are positively secured within the air horn 22.

The drawings and the foregoing specification constitute a description of the improved apparatus for attaching an aircleaner to a carburetor in such full, clear, concise and exact terms as to enable any person skilled in the art to practice the invention, the scope of which is indicated by the appended claims.

What I claim as my invention is:

1. A carburetor having an air horn defining an ai induction passage, an aircleaner mounted on said carburetor over said air induction passage, aircleaner mounting apparatus positioned in non-obstructing relation to said air induction passage for securing said aircleaner to said carbuertor including a resilient wire aircleaner hold-down bail having end portions positioned within said air induction passage and a central portion in axially spaced relation to said air induction passage, means securing the bail in said air horn against axial and angular movement comprising oppositely located transverse passages extending through the air horn walls, radially extending ends on said bail received within said passages and means defining vertically extending recesses on the inside of the air horn aligned with the transverse openings extending therethrough in which the end portions of said bail are positioned and means for preventing displacement of the end portions of the hail from the transverse openings and vertical recesses, comprising a U-shaped bracket at each bail end portion having a central portion passing around the bail end portion radially inwardly thereof with respect to the air born at the open end of the air horn and end portions extending axially of the air horn along the outer surface thereof and an aircleaner mounting stud secured to the central portion of said bail.

2. Structure as claimed in claim 1 wherein vertically extending recesses are provided on the outer surface of the air horn for receiving the end portions of the brackets.

3. Structure as claimed in claim 1 wherein said end portions of each of said brackets and the recesses receiving them terminate in portions extending circumferentially of the air horn.

4. A carburetor having an air horn defining an air induction passage, an aircleaner mounted on said carburetor over said air induction passage, aircleaner mounting apparatus positioned in non-obstructing relation to said air induction passage for securing said aircleaner to said carburetor including a resilient wire aircleaner hold-down bail having end portions positioned within said air induction passage and a central portion in axially spaced relation to said air induction passage, means securing the bail in said air horn against axial and angular movement comprising oppositely located transverse passages extending through the air hom Walls, axially extending passages in the air horn walls communicating with the transverse passages therethrough, radially extending ends on said bail provided with a groove therearound received Within said transverse passages, retaining clips positioned in the axially extending passages engaged in said grooves, means defining vertically extending recesses on the inside of the air horn aligned with the transverse openings extending therethrough in which the end portions of said bail are positioned and an aircleaner mounting stud secured to the central portion of said bail.

5. A carburetor having an air horn defining an air induction passage, an aircleaner mounted on said carburetor over said air induction passage, aircleaner mounting apparatus positioned in non-obstructing relation to said air induction passage for securing said aircleaner to said carburetor including a resilient Wire aircleaner holddown bail having end portions positioned within said air induction passage and a central portion in axially spaced relation to said air induction passage, means securing the bail in said air horn including oppositely located transverse passages extending through the air horn walls, axially extending passages in the air horn walls communicating with the transverse passages therethrough, radially extending ends on said bail provided with a groove therearound received within said transverse passages and retaining clips positioned in the axially extending passages engaged in said grooves and an aircleaner mounting stud 10 secured to the central portion of said bail.

References Cited in the file of this patent UNITED STATES PATENTS Muller May 27, 1958 2,920,717 Tuttle et a1 Jan. 12, 1960 

4. A CARBURETOR HAVING AN AIR HORN DEFINING AN AIR INTUCTION PASSAGE, AN AIRCLEANER MOUNTED ON SAID CARBURETOR OVER SAID AIR INDUCTION PASSAGE, AIRCLEANER MOUNTING APPARATUS POSITIONED IN NON-OBSTUCTING RELATION TO SAID AIR INDUCTION PASSAGE FOR SECURING SAID AIRCLEANER TO SAID CARBURETOR INCLUDING A RESILIENT WIRE AIRCLEANER HOLD-DOWN BAIL HAVING END PORTIONS POSITIONED WITHIN SAID AIR INDUCTION PASSAGE AND A CENTRAL PORTION IN AXIALLY SPACED RELATION TO SAID AIR INDUCTION PASSAGE, MEANS SECURING THE BAIL IN SAID AIR HORN AGAINST AXIAL AND ANGULAR MOVEMENT COMPRISING OPPOSITELY LOCATED TRANSVERSE PASSAGES EXTENDING THROUGH THE AIR HORN WALLS, AXIALLY EXTENDING PASSAGES IN THE AIR HORN WALLS COMMUNICATING WITH THE TRANSVERSE PASSAGES THERETHROUGH, RADIALLY EXTENDING ENDS ON SAID BAIL PROVIDED WITH A GROOVE THEREAROUND RECEIVED WITHIN SAID TRANSVERSE PASSAGES, RETAINING CLIPS POSITIONED IN THE AXIALLY EXTENDING PASSAGES ENGAGED IN SAID GROOVES, MEANS DEFINING VERTICALLY EXTENDING RECESSES ON THE INSIDE OF THE AIR HORN ALIGNED WITH THE TRANSVRSE OPENINGS EXTENDING THERETHROUGH IN WHICH THE END PORTIONS OF SAID BAIL ARE POSITIONED AND AN AIRCLEANER MOUNTING STUD SECURED TO THE CENTRAL PORTION OF SAID BAIL. 